Hello! So, I played a bit of Overwatch while wearing a [Pupil Labs](pupil-labs.com) binocular mobile eye tracker!

Humans are very visual animals, but we only really get high quality visual information from a fairly small area of our retina (called the "[fovea](https://en.wikipedia.org/wiki/Fovea_centralis), roughly the width of your thumb at arm's length). This area takes up roughly 1% of your visual field, but roughly 50% of your visual cortex is devoted to processing information from this area. That means that a huge part of the human strategy for surviving in the world revolves around our ability to quickly and accurately directing our fovea to the parts of the world that contain the information that we need to complete a given task.

Because eye movements are so central to our neural strategy, eye trackers are a very powerful tool for the study of human sensorimotor control - Basically, eye movements are a physical measurement that provides direct insight into your cognitive processes!

Having these kinds of tools to analyze eye tracking could help answer which games are more eye-tracking-dependant (game factor) and which people more frequently use eye-tracking (gaming technique factor).